Reinhold Hanisch (27 January 1884, Bohemia – February 1937, Vienna) was an Austrian migrant worker and occasional business partner of the young Adolf Hitler.

The first months of 1910 constituted a kind of Hitler-Hanisch partnership: while Hitler painted postcards and pictures, mostly watercolors, Hanisch took over their sale.

In order to secure a new revenue stream, Hanisch began painting and became Hitler’s competitor.

On 4 August 1910, Hanisch was reported to the police by another dormitory resident, Siegfried Löffner, who was acting as Hitler's seller.

The house belonged to the parents of a railroad conductor, Franz Feiler, a picture-collector, for whom Hanisch obtained various pictures.

Hanisch often painted pictures of flowers in the style of the painter Olga Wisinger-Florian, which he sold as Hitler originals.

Hitler recognized these as forgeries, and instructed Feiler to file a complaint for fraud against Hanisch.

"[4] Hanisch maintained that in windy speeches Hitler had repeatedly opposed the Social Democratic Party and, unlike the other residents of the men's home, always came down on the side of the state.

According to this account, Hitler associated almost exclusively with Jews, and his best friend in the home was the Jewish copper cleaner Josef Neumann.

Another Jewish friend was a one-eyed locksmith's assistant, Simon Robinsohn, who came from the town of Lisko in Galicia.

[5] According to Hanisch, Hitler pursued money-making schemes with another Meldemannstrasse dormitory resident, Josef Greiner; on one occasion, the two tried to collect excess paste and sell it as homemade antifreeze – but only in summer, so their fraud would not be discovered.

"[6] According to the records of the Viennese authorities, Hanisch died of a heart attack, on 2 February 1937, after two months' incarceration in Vienna.